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Orion Telescopes
2" Orion Extra-Narrowband Sulfur-II Filter
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  • Astrophotography filter highlights the deep red sulfur II wavelength features of photogenic emission nebulas
  • Filter transmits 90% of light at 672.4nm wavelength of S-II light
  • Full width half-maximum (FWHM) bandpass is 7nm or less for optimal performance
  • Astrophotography filter essentially blocks all other wavelengths of light, including light pollution, so you can capture clear images in less than ideal conditions
  • Metal filter cell threaded to fit Orion 2" astrophotography accessories, including nosepiece of Orion CCD cameras and inside Filter Wheels

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Item #  05546

Effectively blacken the background sky with extra-narrowband filters to produce striking, high-contrast astrophotography of emission nebulae. Orion's 2" Extra-Narrowband Sulfur-II Imaging Filter will do just that. It is ideal for use with monochrome CCD cameras like Orion's Parsec 8300M.

It's one of a set of three filters designed to capture details of faint emission nebulae in monochrome astrophotography by creating high-contrast. These specialized "line" filters transmit only the specific wavelengths of light import in emission nebulae, while blocking out the rest. Orion's 2" Extra-Narrowband Sulfur-II Imaging Filter has a full-width half maximum (FWHM) bandpass of just 7nm, ensuring high-contrast images, even in heavily light-polluted or brightly moonlit skies. This filter can be used separately or in combination with a filter wheel for advanced tri-color astrophotography.

Go beyond RGB imaging and capture your favorite nebulae in a revealing new light — no matter how light polluted your skies. Add Orion's 2" Extra-Narrowband Sulfur-II Imaging Filter and see the difference! Includes a protective plastic case.


Limited Warranty against defects in materials or workmanship for one year from date of purchase. This warranty is for the benefit of the original retail purchaser only. For complete warranty details contact us at 800-676-1343.


Please note this product was not designed or intended by the manufacturer for use by a child 12 years of age or younger.

Product Support
Visit our product support section for instruction manuals and more
  • Warranty
    One year
2" Sulfur-II filter
Plastic case

Orders received by 1pm Eastern Standard Time for in-stock item the same business day. Order received after noon will ship the next business day. When an item is not in-stock we will ship it as soon as it becomes available. Typically in-stock items will ship first and backordered items will follow as soon as they are available. You have the option in check out to request that your order ship complete, if you'd prefer.


This product is available to ship Standard delivery within the 50 US states, APO/DPO/FPO addresses and US territories/protectorates. Delivery is not available to Canada.

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